Data doesn't appear by itself! Below is a list of the items we use or have used in the past. Items in italics have been retired (or lost or broken).

Fitbit Ultra

Fitbit One

Fitbit Surge

Fitbit Blaze (current)

Garmin FR620 and HRM-1 Heart Rate Monitor

Withings Smart Body Analyzer (WS-50) Scale

Withings Body Cardio Scale (current)

Withings Blood Pressure Monitor 2012 (current)

Zephyr HxM Smart Heart Rate Monitor (current)

 

While this isn't a complete list, it does cover most of the items that have had impact on us over the years. There have been other products, especially in the early days of these technologies, that just never worked right or were too cumbersome to be put into regular use.